:root {
    --primary-color: #2563eb;
    --secondary-color: #06b6d4;
    --accent-color: #8b5cf6;
    --dark-color: #0f172a;
    --text-color: #334155;
    --light-color: #f8fafc;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
    --gradient-3: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
    --shadow-hover: 0 15px 40px rgba(37, 99, 235, 0.2);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.7;
    overflow-x: hidden;
    background: #ffffff;
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
}

.spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid #2563eb;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.preloader p {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 2px;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

p {
    margin-bottom: 1rem;
}

/* Navbar */
.navbar {
    padding: 1.2rem 0;
    transition: var(--transition);
    background: transparent;
    z-index: 1000;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95) !important;
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 0.8rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff !important;
}

.navbar-nav .nav-link {
    color: #fff !important;
    font-weight: 500;
    margin: 0 1rem;
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--secondary-color) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after {
    width: 100%;
}

/* Mobile Menu */
.navbar-toggler {
    border: 2px solid rgba(255, 255, 255, 0.5);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    transition: var(--transition);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.25);
    border-color: var(--primary-color);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
    padding: 120px 0 60px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(180deg, transparent 0%, rgba(248, 250, 252, 0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: linear-gradient(120deg, #06b6d4 0%, #2563eb 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.hero-content .lead {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons .btn {
    padding: 12px 40px;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
    z-index: -1;
    opacity: 0;
    transition: var(--transition);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.4);
}

.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.btn-outline-light:hover {
    background: #fff;
    color: var(--primary-color);
    border-color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
}

.social-links {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 1s ease 0.6s both;
}

.social-links a {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.social-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #06b6d4, #2563eb);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.social-links a:hover::before {
    opacity: 1;
}

.social-links a:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.4);
    border-color: transparent;
}

.hero-image {
    position: relative;
    z-index: 2;
    animation: fadeInRight 1s ease 0.3s both;
}

.profile-img {
    width: 100%;
    max-width: 500px;
    border: 8px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Section Styles */
.section-padding {
    padding: 120px 0;
    position: relative;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
    color: var(--dark-color);
    letter-spacing: -0.02em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: linear-gradient(90deg, #06b6d4, #2563eb, #8b5cf6);
    border-radius: 3px;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 3rem;
    font-weight: 400;
}

/* ============================================
   ABOUT SECTION - AESTHETIC DESIGN
   ============================================ */
.about-section {
    background: #ffffff;
    position: relative;
    overflow: hidden;
}

.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.3), transparent);
}

.about-section .container {
    max-width: 1400px;
}

/* About Layout Container */
.about-wrapper {
    display: grid;
    grid-template-columns: 48% 52%;
    gap: 2.5rem;
    align-items: start;
}

/* About Left Column - Image + Stats */
.about-left-column {
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
}

/* About Image */
.about-image {
    width: 100%;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 
        0 25px 60px rgba(0, 0, 0, 0.12),
        0 0 0 1px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.about-image:hover img {
    transform: translateY(-8px);
    box-shadow: 
        0 35px 80px rgba(0, 0, 0, 0.18),
        0 0 0 1px rgba(37, 99, 235, 0.15);
}

/* Stats Row - Below Image */
.about-left-column .stats-row {
    display: flex;
    gap: 0.8rem;
    margin-top: 0;
    width: 100%;
}

.about-left-column .stat-item {
    flex: 1;
    padding: 1.8rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* About Content */
.about-content {
    padding: 0;
}

.about-content h3 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    font-weight: 800;
    position: relative;
    padding-left: 18px;
    font-size: 2rem;
    letter-spacing: -0.02em;
}

.about-content h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 80%;
    background: linear-gradient(180deg, #2563eb, #8b5cf6);
    border-radius: 3px;
}

.about-content p {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 1.2rem;
    font-size: 1rem;
}

.about-content .lead-text {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.7;
    color: var(--dark-color);
    margin-bottom: 1.3rem;
}

/* Expertise List */
.expertise-list {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(37, 99, 235, 0.08);
    margin-top: 1.5rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.expertise-list h4 {
    color: var(--dark-color);
    font-weight: 800;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    letter-spacing: -0.01em;
}

.expertise-list ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.expertise-list ul li {
    transition: var(--transition);
    padding: 0.9rem 1rem 0.9rem 3rem;
    border-left: 3px solid transparent;
    margin-bottom: 0.75rem;
    background: #ffffff;
    border-radius: 12px;
    position: relative;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
    font-size: 0.95rem;
    line-height: 1.65;
}

.expertise-list ul li:last-child {
    margin-bottom: 0;
}

.expertise-list ul li i {
    position: absolute;
    left: 1.1rem;
    top: 50%;
    transform: translateY(-50%);
    transition: var(--transition);
    font-size: 1rem;
}

.expertise-list ul li:hover {
    border-left-color: var(--primary-color);
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.02), #ffffff);
    transform: translateX(4px);
    box-shadow: 0 4px 18px rgba(37, 99, 235, 0.1);
}

.expertise-list ul li:hover i {
    color: #2563eb !important;
    transform: translateY(-50%) scale(1.2);
}

/* Stats Row */
.stats-row {
    display: flex;
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(139, 92, 246, 0.05));
    border-radius: 15px;
    border: 1px solid rgba(37, 99, 235, 0.1);
    transition: var(--transition);
    flex: 1;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.3);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-item p {
    color: var(--text-color);
    font-size: 0.95rem;
    margin: 0;
    font-weight: 500;
}

/* Services Section */
.services-section {
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
    position: relative;
}

.services-section .row.g-4 {
    row-gap: 1.5rem !important;
}

.service-card {
    background: #fff;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
    height: 100%;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #2563eb, #06b6d4);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.12);
    border-color: rgba(37, 99, 235, 0.15);
}

.service-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(139, 92, 246, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.2rem;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
}

.service-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.service-card:hover .service-icon i {
    color: #fff;
}

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
    color: var(--dark-color);
    font-weight: 700;
    line-height: 1.4;
}

.service-card p {
    color: var(--text-color);
    margin: 0;
    line-height: 1.65;
    font-size: 0.92rem;
}

/* Experience Section */
.experience-section {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.timeline {
    position: relative;
    padding: 0;
    list-style: none;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50px;
    width: 3px;
    background: linear-gradient(180deg, #2563eb, #8b5cf6, #06b6d4);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 100px;
}

.timeline-marker {
    position: absolute;
    left: 35px;
    top: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
    border: 4px solid #fff;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
    z-index: 2;
    transition: var(--transition);
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.2);
}

.timeline-content {
    background: #fff;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.timeline-content:hover {
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15);
    transform: translateX(10px);
}

.timeline-date {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
    color: #fff;
    border-radius: 25px;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.timeline-content h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
    font-weight: 700;
}

.timeline-content h4 {
    font-size: 1rem;
    color: #64748b;
    margin-bottom: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timeline-content p {
    margin: 0;
    color: var(--text-color);
    line-height: 1.8;
    font-size: 0.95rem;
    text-align: justify;
}

/* Certifications Section */
.certifications-section {
    background: #ffffff;
}

.cert-category {
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.8), rgba(255, 255, 255, 1));
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    height: 100%;
    border: 1px solid rgba(37, 99, 235, 0.1);
    transition: var(--transition);
}

.cert-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(37, 99, 235, 0.12);
}

.cert-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.cert-badge {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(139, 92, 246, 0.1));
    color: var(--primary-color);
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.cert-badge:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
    color: #fff;
    border-color: transparent;
}

.achievements-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.achievement-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: rgba(37, 99, 235, 0.03);
    border-radius: 12px;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.achievement-item:hover {
    background: rgba(37, 99, 235, 0.08);
    border-left-color: #2563eb;
    transform: translateX(5px);
}

.achievement-item i {
    font-size: 1.5rem;
    margin-top: 0.2rem;
    transition: var(--transition);
}

.achievement-item:hover i {
    transform: scale(1.2) rotate(10deg);
}

.achievement-item h5 {
    font-size: 1rem;
    margin-bottom: 0.3rem;
    color: var(--dark-color);
    font-weight: 600;
}

.achievement-item p {
    font-size: 0.9rem;
    color: var(--text-color);
    margin: 0;
}

/* Courses Section */
.courses-section {
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

/* Course Tag Card - Simple Blue Card Style */
.course-tag {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    color: #fff;
    padding: 1.5rem 1rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
}

.course-tag:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.35);
}

.course-tag h5 {
    font-size: 0.85rem;
    margin: 0;
    font-weight: 600;
    line-height: 1.4;
}

/* Portfolio Section */
.portfolio-section {
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

/* Portfolio Category Section Headers */
.portfolio-category-section {
    margin-bottom: 3rem;
}

.category-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.8rem;
    border-bottom: 2px solid rgba(37, 99, 235, 0.1);
    display: inline-flex;
    align-items: center;
}

.category-title i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* Base Client Card */
.client-card {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    color: #fff;
    padding: 1.5rem 1rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
}

.client-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.3);
}

.client-card h5 {
    font-size: 0.85rem;
    margin: 0;
    font-weight: 600;
    line-height: 1.4;
}

/* Defense Category */
.client-card.defense {
    background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
    box-shadow: 0 5px 15px rgba(220, 38, 38, 0.2);
}

.client-card.defense:hover {
    box-shadow: 0 12px 30px rgba(220, 38, 38, 0.3);
}

/* Energy Category */
.client-card.energy {
    background: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
    box-shadow: 0 5px 15px rgba(217, 119, 6, 0.2);
}

.client-card.energy:hover {
    box-shadow: 0 12px 30px rgba(217, 119, 6, 0.3);
}

/* Aviation Category */
.client-card.aviation {
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
    box-shadow: 0 5px 15px rgba(79, 70, 229, 0.2);
}

.client-card.aviation:hover {
    box-shadow: 0 12px 30px rgba(79, 70, 229, 0.3);
}

/* Tech Category */
.client-card.tech {
    background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
    box-shadow: 0 5px 15px rgba(124, 58, 237, 0.2);
}

.client-card.tech:hover {
    box-shadow: 0 12px 30px rgba(124, 58, 237, 0.3);
}

/* Consulting Category */
.client-card.consulting {
    background: linear-gradient(135deg, #0d9488 0%, #14b8a6 100%);
    box-shadow: 0 5px 15px rgba(13, 148, 136, 0.2);
}

.client-card.consulting:hover {
    box-shadow: 0 12px 30px rgba(13, 148, 136, 0.3);
}

/* Banking Category */
.client-card.banking {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    box-shadow: 0 5px 15px rgba(5, 150, 105, 0.2);
}

.client-card.banking:hover {
    box-shadow: 0 12px 30px rgba(5, 150, 105, 0.3);
}

/* Education Category */
.client-card.education {
    background: linear-gradient(135deg, #db2777 0%, #ec4899 100%);
    box-shadow: 0 5px 15px rgba(219, 39, 119, 0.2);
}

.client-card.education:hover {
    box-shadow: 0 12px 30px rgba(219, 39, 119, 0.3);
}

.milestone-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
}

.milestone-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15);
}

.milestone-card i {
    transition: var(--transition);
}

.milestone-card:hover i {
    transform: scale(1.1) rotate(5deg);
}

.milestone-card h4 {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.milestone-card p {
    margin: 0;
    color: var(--text-color);
    font-weight: 500;
}

/* Contact Section */
.contact-section {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.contact-info-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    height: 100%;
}

.contact-info-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15);
}

.contact-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(139, 92, 246, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: var(--transition);
}

.contact-info-card:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
}

.contact-icon i {
    font-size: 2rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.contact-info-card:hover .contact-icon i {
    color: #fff;
}

.contact-info-card h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
    font-weight: 700;
}

.contact-info-card a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.contact-info-card a:hover {
    color: var(--accent-color);
}

.contact-form {
    background: #fff;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-form .form-control {
    padding: 1rem 1.2rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    transition: var(--transition);
    font-size: 1rem;
    background: #f8fafc;
}

.contact-form .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    background: #fff;
    outline: none;
}

.contact-form .form-control::placeholder {
    color: #94a3b8;
}

.contact-form textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

.contact-form .btn-primary {
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #fff;
    padding: 3rem 0;
    text-align: center;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.5), transparent);
}

.footer p {
    margin: 0;
    color: #cbd5e1;
}

.footer .social-links {
    justify-content: center;
}

.footer .social-links a {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1199px) {
    .about-wrapper {
        gap: 3rem;
    }
}

@media (max-width: 991px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-section {
        padding: 100px 0 60px;
        min-height: auto;
    }
    
    .hero-content {
        text-align: center;
        margin-bottom: 3rem;
    }
    
    .hero-buttons {
        justify-content: center;
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .hero-image {
        text-align: center;
    }
    
    .profile-img {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .section-padding {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: 2.3rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 70px;
    }
    
    .timeline-marker {
        left: 5px;
    }
    
    .stats-row {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1.5rem;
    }
    
    .stat-item {
        flex: 1 1 calc(33.333% - 1rem);
        min-width: 150px;
    }
    
    /* About Section - Tablet */
    .about-section .container {
        max-width: 100%;
    }
    
    .about-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-left-column {
        position: relative;
        top: auto;
        max-width: 550px;
        margin: 0 auto;
        width: 100%;
    }
    
    .about-left-column .stats-row {
        justify-content: center;
    }
    
    .about-content {
        padding: 0 1rem;
    }
    
    .navbar-nav {
        background: rgba(15, 23, 42, 0.98);
        padding: 1rem;
        margin-top: 1rem;
        border-radius: 10px;
    }
    
    .navbar-nav .nav-link {
        margin: 0.5rem 0;
        padding: 0.8rem 1rem;
        border-radius: 8px;
    }
}

@media (max-width: 767px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .section-padding {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .profile-img {
        max-width: 350px;
    }
    
    .hero-buttons .btn {
        padding: 10px 30px;
        font-size: 0.9rem;
    }
    
    .about-left-column {
        max-width: 100%;
    }
    
    .about-left-column .stats-row {
        flex-wrap: nowrap;
        gap: 0.8rem;
    }
    
    .about-left-column .stat-item {
        flex: 1;
        min-width: auto;
        padding: 1.2rem 0.8rem;
    }
    
    .about-left-column .stat-number {
        font-size: 2.2rem;
    }
    
    .about-content h3 {
        font-size: 1.7rem;
    }
    
    .about-content .lead-text {
        font-size: 1.05rem;
    }
    
    .expertise-list {
        padding: 1.5rem;
    }
    
    .expertise-list ul li {
        font-size: 0.9rem;
        padding: 0.8rem 0.9rem 0.8rem 2.7rem;
    }
    
    .stats-row {
        gap: 1rem;
    }
    
    .stat-item {
        flex: 1 1 calc(50% - 0.5rem);
        padding: 1.5rem 1rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    /* Course Tags - Tablet */
    .course-tag {
        padding: 1.2rem 0.8rem;
        min-height: 70px;
    }
    
    .course-tag h5 {
        font-size: 0.8rem;
    }
    
    /* Portfolio Category - Tablet */
    .category-title {
        font-size: 1.2rem;
    }
    
    .client-card {
        padding: 1.2rem 0.8rem;
        min-height: 70px;
    }
    
    .client-card h5 {
        font-size: 0.8rem;
    }
}

@media (max-width: 575px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .social-links a {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    .about-left-column {
        max-width: 100%;
        margin: 0 auto;
    }
    
    .about-left-column .stats-row {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: 0.5rem;
    }
    
    .about-left-column .stat-item {
        flex: 1;
        min-width: auto;
        padding: 1rem 0.4rem;
    }
    
    .about-left-column .stat-number {
        font-size: 1.6rem;
    }
    
    .about-left-column .stat-item p {
        font-size: 0.7rem;
    }
    
    .about-content h3 {
        font-size: 1.5rem;
    }
    
    .about-content .lead-text {
        font-size: 1rem;
    }
    
    .about-content p {
        font-size: 0.95rem;
    }
    
    .expertise-list {
        padding: 1.2rem;
    }
    
    .expertise-list h4 {
        font-size: 1.1rem;
    }
    
    .expertise-list ul li {
        font-size: 0.87rem;
        padding: 0.75rem 0.8rem 0.75rem 2.5rem;
    }
    
    .stat-item {
        flex: 1 1 100%;
    }
    
    .stat-number {
        font-size: 2.2rem;
    }
    
    .service-icon,
    .contact-icon {
        width: 65px;
        height: 65px;
    }
    
    .service-icon i,
    .contact-icon i {
        font-size: 1.6rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    /* Course Tags - Mobile */
    .course-tag {
        padding: 1rem 0.6rem;
        min-height: 65px;
    }
    
    .course-tag h5 {
        font-size: 0.75rem;
    }
    
    /* Portfolio Category - Mobile */
    .category-title {
        font-size: 1.1rem;
        display: flex;
        width: 100%;
    }
    
    .portfolio-category-section {
        margin-bottom: 2rem;
    }
    
    .client-card {
        padding: 1rem 0.6rem;
        min-height: 65px;
    }
    
    .client-card h5 {
        font-size: 0.75rem;
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .btn {
        min-height: 44px;
    }
    
    .social-links a {
        min-width: 48px;
        min-height: 48px;
    }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .navbar, 
    .footer, 
    .contact-form, 
    .hero-buttons, 
    .social-links,
    .preloader {
        display: none !important;
    }
    
    .section-padding {
        padding: 20px 0;
    }
}